•ETS 300-012, CCITT I.430 and ANSI T1.605 S/T interface
•Full-duplex 2B+D, 192 kbit/s transmission
•D-channel access contention resolution
•Point-to-point, point-to-multipoint and star configurations
•Master (NT)/Slave (TE) modes of operation
•Exceeds loop length requirements
•Complete loopback testing capabilities
•On chip HDLC D-channel protocoller
•8 bit Motorola/Intel microprocessor interface
•Controllerless or microprocessor-controlled operation
•Mitel ST-BUS interface
•Low power CMOS technology
•Single 5 volt power supply
The MT8930C Subscriber Network Interface Circuit (SNIC) implements the ETSI ETS 300-012, CCITT I.430 and ANSI T1.605 Recommendations for the ISDN S and T reference points. Providing point-to- point and point-to-multipoint digital transmission, the SNIC may be used at either end of the subscriber line (NT or TE).
An HDLC D-channel protocoller is included and controlled through a Motorola/Intel microprocessor port. A controllerless mode allows the SNIC to operate without a microprocessor.